Pocket knife



FIG. 1 is a front elevation view of a pocket knife showing my new design, with the blade in the open position;

FIG. 2 is a front perspective view thereof with the blade in the closed position;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 is a front elevation view thereof; and,

FIG. 8 is a rear elevation view thereof.

The broken lines depict portions of the pocket knife in which the design is embodied that are not considered part of the claimed design. 

CLAIM The ornamental design for a pocket knife, as shown and described. 